Date post: | 21-Dec-2015 |
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P09009 Wheelchair Design
Benchmarking
Agenda
• Components– Foldable Drive Mechanisms– Push-rims– Rims– Tires– Castors
• Existing One-Arm Wheelchairs
Foldable Drive Mechanisms
Push-rims
• Metal Push-Rims• Disadvantages
•Cold•Slippery
• Advantages•Durable
•Rubberized Push-Rims•Disadvantages
•Lack of durability•More expensive
•Advantages•Comfort
Rims
(Source 1) (Source 2)
Spoke Rims
Lighter but require more maintenance
Absorb shock better
Mag Rims
Heavier, but relatively indestructible
Tires
Pneumatic Tires (Source 3)
Advantages:• Lighter• Better shock absorbing• Adequate traction on most terrain
Disadvantages:• Maintenance
• Flats and air leaks
Pneumatic w/Insert (Source 4)
Advantages:• Flat resistant• Longer tire life
Disadvantages:• More expensive• Less traction• Less shock absorbent
Solid Plastic (Source 6)
Advantages:• Least expensive• Flat proof
Disadvantages:• Absorbs shock very poorly• Heavier
Contrast of Tires
1-3, Pneumatic; 4, Pneumatic w/Insert; 5, Solid Plastic (Source 5)
Castors
• Castors are similar to tires– SoftRoll castors absorb shock
better than many other castors
Soft Roll Castors (Source 7)
Solid Castors (Source 8) Pneumatic Castors (Source 9)
Complete Wheelchairs
• Basic folding wheelchair• 37 lbs.• 2-Arm Operation• Adjustable footrests• Padded Armrests• Push-to-lock brakes• Price: $109
Basic Wheelchair (Source 10) Lightweight Wheelchair (Source 12)
• Adjustable armrests• 28 lbs• Adjustable height backrest• Rear wheel options• Foldable• Seat cushion• Price: $780
Tracer SX5(Made by Invacare)
Tracer SX5 2-Arm Wheelchair (Source 11)Tracer SX5 1-Arm Wheelchair
• Push-to-stop brakes• 33 lbs• Possible 1-Arm Operation
• (With foldable axle)• Price: $1000 (with 1-Arm operation configuration)
References1. http://www.edmond-wheelchair.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=EWRS&Product_Code=W06234008
2. http://www.edmond-wheelchair.com/skyway_wheels.htm
3. http://www.spinlife.com/spintips/details/k/Wheelchair%20Wheel%20Choices/a/104/c/2
4. http://www.schwalbetires.com/files/x_img_rightrun_all.gif
5. http://www.colourswheelchair.com/images/accessories/tires.jpg
6. http://www.spartech.com/images/wheelchair-wheels.jpg
7. http://www.edmond-wheelchair.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=EWRS&Product_Code=W00400658
8. http://www.edmond-wheelchair.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=EWRS&Product_Code=W00610458
9. http://www.edmond-wheelchair.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=EWRS&Product_Code=W00610158
10. http://www.spinlife.com/Drive-Medical-Spirit-Standard-Wheelchair/spec.cfm?productID=84993
11. http://www.invacare.com/cgi-bin/imhqprd/inv_catalog/prod_cat_detail.jsp?s=0&prodID=TRSX5&catOID=null
12. http://www.spinlife.com/Sunrise-/-Quickie-Quickie-LX-Lightweight-Wheelchair/spec.cfm?productID=217